JPS61101740A - Engine type heat pump boiler - Google Patents

Abstract

PURPOSE:To effectively and rationally utilize the heat of an engine by disposing an inlet from which hot water inside a tank is tanken out as engine coolant at a position higher than a radiator in the tank, and disposing an outlet of the used hot water into the tank at a position higher than the coolant inlet. CONSTITUTION:When a heat pump 2 is operated, thermal medium circulates in a pipe 17, is heated by exchanging heat with the ambient air in a spiral section 29, is further heated by exchanging heat with the exhaust gas of an engine 3 in a spiral section 28, is still more heated by being compressed by a heat pump compressor 36, whereupon the high-temperature thermal medium is supplied to a radiator 4 in which it is cooled by exchanging heat with the hot water in a tank 1. At this moment, the hot water in a downwardly extending tube 8 is subjected to the first stage heating by exchanging heat with the thermal medium in the radiator 4. Then, the heated hot water staying on the top of the downwardly extending tube 8 is sucked from the coolant inlet 5 by a pump 2 to cool the engine 3, and, at the same time, the hot water is subjected to the second stage heating, whereupon it returns to the top of the tank 1 from a coolant outlet 6 and is subjected to the third stage heating by exchanging heat with the exhaust gas in a winding section 24 of the exhaust pipe 2.

Description

[Detailed description of the invention] 【Technical field】

The present invention relates to a boiler that uses an engine as power to drive a heat pump to heat hot water in a tank.

[Background technology]

There have been various types of conventional boilers, including those that use gas as fuel and those that boil water using electric heaters, but there have been no boilers that use heat pumps that use the atmosphere as a heat source. \

[Purpose of the invention]

The present invention has been made in view of the above-mentioned technical background, and its purpose is to make it possible to produce hot water using a heat pump that uses the atmosphere as a heat source, and to make it possible to produce hot water heated by a heat pump. Furthermore, the heat pump is heated to a high temperature using the heat of the engine for driving the heat pump, thereby making it possible to use energy effectively and rationally.

[Disclosure of the invention]

The engine-type heat pump boiler of the present invention includes a tank 1 for storing hot water, a heat pump 2 for heating the hot water in the tank 1, and an engine 3 for driving the heat pump 2. A cooling water inlet 5 is provided above the radiator 4 in the tank 1 and is used for cooling. The cooling water discharge port 6 for returning hot water into the tank 1 is provided above the cooling water inlet 5 in the tank 1, so that the radiator 4 of the heat pump 2 The heated water can be further used as cooling water for the engine 3 to heat it. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The tank 1 for storing hot water is provided with a recess 7 that is open at the bottom, and a cylindrical hanging cylinder part 8 is formed around the recess 7, so that hot water can also be stored inside the hanging cylinder part 8. There is a drain 1 at the lower end of the hanging cylinder part 8.
A water supply pipe 15 is connected slightly above the drain 16, a high temperature hot water supply W20 is connected to the upper surface of the tank 1, and a medium temperature hot water supply W21 is connected to the upper side of the tank 1. The tank 1 has its outer surface covered with a heat insulating material 9 and is housed in a can body 10. recess 7
Inside, there are a heat pump compressor 36, an engine 3 for driving the heat pump buf/Brenosa 36, and an engine 3.
A starting motor 11 is built in, and motor 1 is located in the center.
1, the engine 3 and motor 11 are separably connected by a J31 clutch 12 such as an electromagnetic clutch, and the motor 11 and a heat pump compressor 36 are connected by a second clutch 13 such as an electromagnetic clutch. As a result, the engine 3, motor 3, heat pump compressor 36, first and second clutches 12.13
is surrounded by the hanging cylindrical portion 8 of the tank 1 and the warm water therein, thereby providing sound insulation. The heat pump 2 consists of a heat pump compressor 36, a heat absorber 14, and a heat radiator 4. The heat absorber 14 absorbs heat into a heat medium, and then the heat medium is compressed to form a high-temperature heat medium. This heat radiator repeats a cycle of discharging heat to a high temperature heat medium, then expanding the heat medium to form a low temperature heat medium, and sending this low temperature heat medium to the heat absorber 14 again. 4 is placed in the hanging front part 8 of the tank 1, and the heat sink 14 is located in the hanging front part 8 of the tank 1.
The heat pump compressor 36, the heat absorber 14, and the heat radiator 4 are arranged on the top surface of the body 10.
7. Specifically, the radiator 4 is formed in a spiral shape and is arranged above the water supply pipe 15 and below the upper surface of the recess 7. The engine 3 is operated by burning fuel sent from the fuel pipe 26, and is of a cooling type that circulates cooling water inside to prevent overheating, and cools the hot water in the tank 1 through the cooling water circulation pipe 18. It can be used as water, and a cooling water inlet 5 for taking out hot water for cooling is opened on the upper surface of the recess 7. Therefore, the position of the cooling water inlet 5 is located above the radiator 4. On the other hand, a cooling water outlet 6 for cooling the engine 3 and returning high-temperature hot water into the tank 1 is opened at the upper part of the tank 1 . Further, a constant temperature on-off valve 19 is provided in the cooling water circulation pipe 18 on the cooling water outlet 6 side. This constant temperature opening/closing valve 19 may be made of thermowax or shape memory alloy, or may be of an electric type.
When the water does not reach a certain temperature, the constant temperature on-off valve 19 does not open, and the high temperature hot water returned to the upper part of the tank 1 after cooling the heat pump compressor 36 is maintained at a constant temperature. . The exhaust pipe 22 of the engine 3 passes through the inside of the tank 1 up and down, and the exhaust port 23 at the upper end of the exhaust pipe 22 opens on two sides of the can body 10''. A heat radiation fin 25 is attached to the surface of the meandering portion 24, and in this meandering portion 24, the hot water in the tank 1 and the exhaust gas (approximately 300°C) of the engine 3 exchange heat with high efficiency. Furthermore, this meandering portion 24 also has the effect of muffling the exhaust gas. On the other hand, the intake port 27 of the engine 3
The heat absorber 14 disposed on the upper surface of the can body 10 is arranged in the recess 7 and is formed in a spiral shape, with a small-diameter helical portion 28 and a large-diameter helical portion 29 connected in series. The heating medium is formed in a double helical shape by the large-diameter spiral part 2.
9 and then returns to the heat pump compressor 36 through a small-diameter spiral portion 28 . The large-diameter spiral portion 29 is in contact with the outside air, and the heat medium is heated by contacting the outside air here, and the small-diameter spiral portion 28 projects from the top surface of the can body 10. Exhaust port 23
After exchanging heat with the outside air, the heat medium is heated to an even higher temperature by exchanging heat with the high-temperature exhaust gas. [Heat absorber] 4 is housed in a heat absorber housing part 30 provided on the top surface of the can body 10, and inside the heat absorber housing part 30 is a partition wall 3.
1 into an outer chamber 41 that accommodates two large-diameter spiral sections 28 and an inner chamber 42 that accommodates a small-diameter spiral section 28 . The outside air intake port 33 for introducing outside air is opened, and the outer peripheral chamber 41
An annular gap 43 is formed between the annular top plate 37 of the heat absorber storage section 30 and a disk-shaped intermediate plate 38 at the center at the boundary between the inner chamber 42 and the upper end of the partition wall 31. It is partitioned into an outside air discharge hole 44 on the outer peripheral chamber 41 side and an inner chamber 42.
The side exhaust is divided into soot discharge holes 32, and the exhaust port 23
The exhaust gas discharged from the exhaust gas discharge hole 32 is released to the atmosphere from the exhaust gas discharge hole 32, and the outside air sucked from the outside air intake port 33 exchanges heat with the spiral portion 29, and then is released to the atmosphere from the outside air release hole 44. It has become. The structure of the defining outlet holes 32 and 44 is shown in detail in FIG. Narrower than (, exhaust gas release hole 3
The edges on both sides of 2 have a trumpet shape that protrudes upward and is constricted at the top. is inclined toward the small-diameter spiral portion 28 side. For this reason, the exhaust
When the exhaust gas flows out from the gas discharge hole 32, the outside air discharge hole 44
becomes a negative pressure, the outside air in the peripheral chamber 41 is forcibly discharged to the outside from the outside air discharge hole 44, and the outside air is sucked in from the outside air intake port 33, and the outside air inside the peripheral chamber 41 is forcibly discharged to the outside from the outside air discharge hole 44. Forced ventilation is performed in the room 41. Furthermore, the upper part of the defining outlet hole 32.44 is covered by a top cover 39, and a ventilation hole 40 is opened in the side surface of the top cover 39. In addition, this device has a control box 34 and a controller 35. Next, turn on the one-hand switch that explains the operation and function of this device, and the engine 3 will be ready to start.
As shown in FIG. 4(a), the first clutch 12 between the engine 3 and the motor 11 is connected, and the starting motor 11 is rotated until the second clutch 13 between the motor 11 and the heat pump compressor 36 is separated. When this is done, engine 3 is started. After the engine 3 is started, the second clutch 13 is connected between the motor 11 and the L-bond pump presser 36 as shown in FIG. 4(b).
When the engine 3 is also connected, the heat pump compressor 36 is driven by the engine 3, and when the power to the motor 11 is then turned off, the rotor of the motor 11 rotates as a flywheel. In the event of a failure or fuel shortage, the first clutch 12 between the engine 3 and the motor 11 is disconnected, and the second clutch 13 between the motor 11 and the heat pump compressor 36 is connected, so that the motor 11 can operate the heat pump. 2 can be driven. When the heat pump 2 is operated, the heat medium circulates in the heat medium circulation pipe 17 and is heated by exchanging heat with the atmosphere in the large-diameter screw tiE part 29, and is further heated by the exhaust gas of the engine 3 in the small-diameter screw 112B. It is exchanged and heated to a higher temperature, and then compressed by the heat pump compressor 36 to become a higher temperature heat medium and sent to the radiator 4, where it exchanges heat with the hot water in the tank 1 and is cooled. At this time, the hot water in the hanging cylinder part 8 exchanges heat with the heating medium in the radiator 4 to perform the first stage of heating. Next, the hot water that has been heated by the heat pump 2 and accumulated around the upper surface of the hanging cylinder part 8 is sucked through the cooling water inlet 5 and sent to the engine 3, cooling the engine 3 and discharging the hot water itself into the second tank. The cooling water is heated in stages and when it reaches a certain temperature or higher, it is returned to the upper part of the tank 1 from the cooling water outlet 6. The returned hot water is exhausted here! The third stage of heating is performed by exchanging heat with the exhaust gas in the meandering section 24 of 22, and as the temperature is lowered, the hot water is heated in three stages as shown in Figure 1. It is heated to a high temperature and stored in the tank 1, and is taken out from the high-temperature water supply pipe 20 or medium-temperature water supply pipe 21 and used as needed. [Effect of the invention 1] As described above, the present invention has a tank for storing hot water, a heat pump for heating the hot water in the tank, and an engine for driving the heat pump, and a radiator of the heat pump is disposed inside the tank. A cooling water inlet is installed above the radiator in the tank to take out hot water from the tank as cooling water for engine cooling, and a cooling water outlet is installed to return hot water used for cooling back into the tank. Since it is installed above the cooling water inlet in the tank, it is possible to supply hot water at low cost with a heat pump using the atmosphere as a heat source.Furthermore, the heat generated by the engine to operate the heat pump is used to heat the water with the heat pump. By using the heated water for engine cooling, this hot water is further heated by the heat of the engine, and it is possible to obtain hot water at a high temperature that cannot be obtained with a heat pump alone. y゛'r 'l, 6.
``the, b -) f, > INIEJII engine heat can be used effectively and rationally.

[Brief explanation of drawings]

Figure 11 is a cross-sectional view showing an embodiment of the present invention, Figure tjS2 is a principle diagram of the same as above, Figure 3 is a cross-sectional view of the exhaust gas discharge hole and outside air discharge hole part of the same as above, and Figure 4 (, ) ( b) is an explanatory diagram showing how to start the heat pump compressor, and Fig. 5 is an explanatory diagram when the heat pump compressor is operated by a motor, where 1 is a tank, 2 is a heat pump, 3 is an engine,
4 is a radiator, 5 is a cooling water inlet, and 6 is a cooling water outlet. Agent Patent Attorney Ishi 1) Chief 7 Figure 3 t+n Figure 4 (G) (b) Figure 5 Procedural Amendment (Voluntary) December 78, 1981 1. Indication of the case 1982 Patent No. 224513 ! ;j2, Name of the invention: Engine-type heat-bonded boiler 3, Relationship with the case of the person making the amendment Patent applicant: 1048 Kadoma, Kadoma City, Osaka Prefecture Name (583) Iku Kobayashi 4, Representative of Matsushita Electric Works Co., Ltd. Agent postal code 530 5, voluntary correction of date of amendment order Application number Japanese Patent Application No. 59-224513 Specification, page 2, line 4~! In line l'S5, delete [8 that did not use a large heat source...(omitted)...] and add ``Effectively compacted by using an engine-type heat pump boiler and a boiler exclusively for hot water storage.''"No items were found." will be inserted.

Claims (1)

[Claims] (1) It has a tank that stores hot water, a heat pump that heats the hot water in the tank, and an engine that drives the heat pump, and the radiator of the heat pump is installed inside the tank and is used as cooling water for engine cooling. A cooling water inlet for taking out the hot water in the tank from the tank is installed above the radiator in the tank, and a cooling water outlet for returning the hot water used for cooling to the tank is installed at the cooling water inlet in the tank. An engine-type heat pump boiler installed above.